Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	7696	1096	14%	0.00	1457	725	50%	6.8
10 Kinds of People	15857	3288	21%	0.01	2697	1931	72%	3.4
2048	7347	3400	46%	0.00	3310	2816	85%	2.5
3D Printed Statues	8371	3857	46%	0.00	3571	3199	90%	2.0
3D Printer	667	122	18%	0.00	254	95	37%	8.5
3-Sided Dice	2134	188	9%	0.00	349	129	37%	8.6
4 thought	7427	2484	33%	0.00	2495	2077	83%	2.9
A1 Paper	4767	1405	29%	0.00	1388	1106	80%	3.4
Aaah!	25506	11857	46%	0.00	10658	9925	93%	1.6
Abandoned Animal	1517	329	22%	0.03	398	289	73%	5.1
ABC	11299	5122	45%	0.00	4891	4451	91%	1.7
Ab Initio	693	115	17%	0.10	116	72	62%	8.1
Above Average	7043	2933	42%	0.00	2901	2600	90%	2.1
A+B Problem	7132	695	10%	0.03	1022	336	33%	8.4
A Brief Gerrymander	201	45	22%	0.15	49	30	61%	8.4
Abstract Art	261	78	30%	0.00	80	60	75%	6.5
Absurdistan Roads II	547	197	36%	0.00	195	133	68%	6.8
Absurdistan Roads III	1355	380	28%	0.02	370	284	77%	5.5
Access Points	344	135	39%	0.01	123	98	80%	4.2
A Classy Problem	8464	2143	25%	0.01	1885	1445	77%	4.7
ACM Contest Scoring	5958	3739	63%	0.00	3312	3122	94%	1.6
Add 'Em Up!	261	93	36%	0.01	91	73	80%	4.0
Adding Words	9117	2138	23%	0.00	2104	1609	76%	4.0
A Different List Game	6421	444	7%	0.00	805	161	20%	9.2
A Different Problem	27229	10182	37%	0.00	9395	8156	87%	2.1
Adjoin the Networks	1822	487	27%	0.00	434	342	79%	5.5
Administrative Difficulties	1030	236	23%	0.03	253	172	68%	6.2
Advanced Causal Measurements	57	18	32%	0.10	22	18	82%	6.2
Adventure Begins	232	73	31%	0.06	80	60	75%	4.3
Adventures in Moving -- Part IV	903	267	30%	0.00	233	200	86%	4.4
A Favourable Ending	1432	372	26%	0.00	347	262	76%	4.6
A Feast For Cats	1905	678	36%	0.00	451	381	84%	4.2
A Flea on a Chessboard	358	73	20%	0.01	88	64	73%	5.0
Air Conditioned Minions	4608	1263	27%	0.00	1331	999	75%	3.8
Airline Hub	1735	320	18%	0.01	348	195	56%	6.7
Airport Coffee	803	173	22%	0.09	165	119	72%	7.2
Airport Construction	3269	419	13%	0.02	339	181	53%	7.4
Airport Logistics	56	13	23%	0.00	19	13	68%	7.4
Airports	385	109	28%	0.11	114	81	71%	6.7
Akcija	6485	2871	44%	0.00	2618	2321	89%	2.0
Aladin	751	76	10%	0.10	121	29	24%	8.2
Alchemy	98	16	16%	0.02	29	16	55%	8.7
Alea iacta est	32	13	41%	0.34	17	13	76%	6.9
Alehouse	123	41	33%	0.04	40	28	70%	5.8
Alice in the Digital World	2986	795	27%	0.01	769	606	79%	4.0
Alien Codebreaking	215	11	5%	3.23	30	8	27%	8.9
Alien Numbers	2086	1080	52%	0.00	1049	953	91%	2.0
A List Game	7500	2222	30%	0.00	2096	1763	84%	2.9
All about that base	2661	1045	39%	0.00	1020	854	84%	2.9
All Different Directions	1123	482	43%	0.00	453	395	87%	2.6
Allergy Test	440	124	28%	0.00	140	71	51%	7.9
All Friends	829	158	19%	0.00	149	77	52%	8.9
All is Well	10	2	20%	0.03	2	2	100%	5.5
All Just A Dream	1705	387	23%	0.05	270	188	70%	6.7
All Pairs Shortest Path	8093	1440	18%	0.02	983	694	71%	5.9
Almost Perfect	6727	1558	23%	0.00	1664	1295	78%	3.6
Almost Union-Find	5928	1048	18%	0.02	948	545	57%	6.8
Alphabet	1348	666	49%	0.00	678	573	85%	3.0
Alphabet Animals	1470	468	32%	0.00	478	382	80%	3.1
Alphabet Spam	7108	4485	63%	0.00	3623	3487	96%	1.3
Alternative Bracket Notation	204	85	42%	0.00	91	75	82%	5.3
Altruistic Amphibians	373	95	25%	0.24	93	67	72%	5.0
Amalgamated Artichokes	3632	1633	45%	0.01	1475	1283	87%	2.7
Amanda Lounges	1379	386	28%	0.03	360	282	78%	5.6
A Mazing!	2426	525	22%	0.09	252	192	76%	5.1
Amazing Adventures	315	82	26%	0.02	91	64	70%	5.6
Amazing Race	280	75	27%	0.39	84	60	71%	6.7
Ambiguous Result	258	56	22%	0.02	85	53	62%	8.0
Amsterdam Distance	1273	558	44%	0.00	601	494	82%	2.9
A Multiplication Game	674	212	31%	0.00	242	176	73%	4.9
Anagram Counting	3200	1227	38%	0.00	1189	987	83%	3.2
Andrew the Ant	252	71	28%	0.06	81	61	75%	5.2
A New Adventure	659	101	15%	0.01	130	85	65%	6.3
A New Alphabet	9968	4478	45%	0.00	4179	3859	92%	1.8
An I for an Eye	553	130	24%	0.00	154	105	68%	5.3
Animal Classification	1549	353	23%	0.03	303	201	66%	6.8
An Industrial Spy	1439	756	53%	0.02	599	515	86%	3.2
Another Brick in the Wall	2916	1434	49%	0.00	1392	1272	91%	1.9
Another Candies	7054	1913	27%	0.00	2007	1653	82%	2.7
Another Dice Game	91	64	70%	0.00	59	53	90%	4.0
Another Query on Array Problem	1418	197	14%	0.05	305	135	44%	7.7
Antenna Placement	127	58	46%	0.00	42	34	81%	5.4
Anthony and Cora	817	211	26%	0.00	254	177	70%	5.4
Anthony and Diablo	2670	928	35%	0.00	927	798	86%	2.5
Antiarithmetic?	1226	234	19%	0.01	295	172	58%	7.0
Ants	3254	1434	44%	0.00	1154	1007	87%	2.7
Apaxiaaaaaaaaaaaans!	11693	7153	61%	0.00	6323	6060	96%	1.4
Apostrophe Catastrophe	93	24	26%	0.00	24	17	71%	6.2
Appalling Architecture	505	143	28%	0.00	128	108	84%	3.8
Apparatus	681	168	25%	0.01	135	101	75%	5.7
Apple Market	461	93	20%	0.07	113	58	51%	8.2
Apples, Cherries, and Mangos	406	123	30%	0.02	126	91	72%	6.3
A Prize No One Can Win	1705	691	41%	0.00	642	566	88%	2.4
Aquarium Tank	470	130	28%	0.00	125	98	78%	5.1
Aqueduct Construction	196	71	36%	0.01	55	47	85%	6.7
A Question of Ingestion	1231	302	25%	0.00	288	219	76%	5.8
Arable Area	293	65	22%	0.04	66	42	64%	8.1
Arachnophobia	314	92	29%	0.14	83	68	82%	5.2
A Random Problem	311	78	25%	0.00	75	51	68%	6.5
A Rational Sequence	1630	547	34%	0.00	569	420	74%	4.4